Feeding mechanism for sewing-machines.



L. ONDERDONK.

FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION HLED 1AN.4, 190B.

l 142,359 lntvntod .l mw 8, 1915.

2 SHEETS-SHEET 2.

UNTED STATES..PATENT UFFICE.

LANSING' ONDERDONK, OF NEW.YCtRIQQN. lY.; ASSIGNOR T0 UNION SPECIAL Jl/ljACliIINIE.v

T o Z'l'i'h'm'it'm/zy cofncermf B e" nowii that I, L.-\.\"sr,\*c ONDnnDoNK, a citizen"e`f`itlie UnitedStates, residingl at Near-*York city, inthe count'yof New York, State of New York, have-invented certa-in newfandnseful Improvements in Feeding 'Mechanism for Sew1ngMachines,'of whlclir thefllowing is a. description, reference being had te the accoi'npanying drawing, and to the-letters and figures of reference marked theren. I Myf f'i'venti'en relates to sewing machines and Amore cspecialy to feeding mechaiiisms fora ll llind'stitch sewing machine, although it isebvio'ns that from certain aspects, vmy

vfedi'ng `n`1echanisin*may'be used in connecf v'itliisewing-niachinos of other types.

'tfhe"p'eeiit embodimcntof my inveni' have shown a blind stitch-sewing ma chineconiprising a work support, having a ridge"formingf'ineniber carried lthereby, and inov'er'liangn' U arm4 on-wliic'h is supported th l presser 'Eeotf' mechanism which incl ndose two presser feelliearing-upon oppositefsides of therijdgeff i'lng member. 'etti' In niacliinsof this character, it is found ions disadvantages follow from using-'artour' motion feed, which is in cved through then work support to engage the lfabricQinafvertical plane for the reason that the 'fahr-ic* istherehy crowded toward the ap 'oftjl'le ridge forming member.

After tlielfa-bric has been placed upon the ridge forming member, and proper-ly drawn over the sa me for the entrance. of the needle, i veryjdesirable .that the fabric be held rtclied position across the apex of db. .forming member.` I v flheroii'jectof my invention is there'mfe, to -proride :ai feeding .mechanism which shall co- 'operatewlith thepressermembers in such a :nanneizas to engage and move the material without disturbing' the stretched condition of thennaterial or crowdingr the same toward thestitching point. -j

-A' further Ql'ijcct of my invention is to proride a plurality'.of-Hfeed dogs Ain connectidn u'ithf` .iticlifncd-v werk supporting,member,

whicheediilegsare lmoved Y,siibstantially ,at

rightzmgles the work .supi mrting 'member *l ith i yj'iroject to engage :th

specificati@ of Leiter'sratent.

.cap removed. elevation of one of my improved feed dogs.

iig-mechanism and also the COIYIPAN'YUOF CHICAGO;- ILLINOIS,l A CORPOR-ATION'OF ILLINOIS.

FEEDINe ivnsci'raNrsnnv non SEWING-MACHINES.

tion; -Figure 1 is a front'elevation of the forward'end of a sewing machine, with my improved feeding mechanism applied thereto, the work support being sectioned to show thefeeding mechanism. Fig. 2 is an end elevation of the work support with the end Fig. 3 is an end and side Fig. 4 isan end and side elevation of the oth'erfeed dog. Fig. 5 is a sectional view through the forward end of the .work support, showing a modified form ofV feeding mechanism. Fig. G is an end view .of the same with the front plate removed. Fig. 7 is a detail view of mymodified form of feed dog.

Patent-ed Julie 8, 1915. f Appli-ation med Jamaiy 4, 1998. serial No. waas?. f

The work support 1 carries at its forward .Y

`end a ridge forming member formed by the work supporting 'plates 2 and 3, which are secured thereto with their upper edges in contact sons to form a ridge extending any other form of stitch forming mechanism.

that herein shown,

may be substituted for ('lcpartiug from the without in any manner spirit of my invention. y

The presser mechanism for holdin'g`the material upon the work support, comprises a presser foot 9 which cooperates with the work supporting'member 2, and a presse!"` feet l0, which cooperates with the work supporting member 3. Said presser feet 9 and 1() are preferably pivoted to supporting levers 1l and 12 respectively, which are piv-fV fztcd un the ovcrhanging arm 4. Said presser feet-"J and l() are yieldmgly forced into contact with the work support and any suitablev mechanism'may be provided for'raising they .sxim'ejf I' f Mv feeding mechanism comprisespin thel present embodiment' of my invention, two'l The feed dog 13 is provided with downwardly extending lugs 15 and 16, which engage loosely a rod 17 feed dogs to swing about said rods as a 15 pivotal support. The block 21 is provided with a l'irojecting 'pin or roller 2i), which lies in the forked end 23 of an arm 24, secured to the outer end of a shaft The shaft 25, is oscillated by any suitable mechanism, and as said shaft oscillates, the rods 17 and 20 will be reciprocated back and forth in their supporting bearings.

The lug 15 on the feed dog 13, is extended downwardly and carries a laterally extending roller 2G. The lug 19 on the feed dog 14 is also extended downwardly and carries a laterally extending roller 27.

The shaft 2S located in the work support, carries at its forward end a laterally eX tending arm 29, which is provided with a V-shaped disk 30. Said V-shaped disk 30, extends between the rollers 26 and 27 carried by the feed dogs 13 and 14.

As the shaft 28 is oscillated, the disk 30 is raised or lowered and as the V-shaped portion of said disk is forced against the rollers 26 and 27, the feed'dogs 13 and 14 are oscillated upon their pivotal support, thus forcing the feed engaging surface of said ed dogs, outward through Ithe work sup ort, into engagement with the material.

A suitable spring 3l is secured to the feed dogs 13 and 14 at a point above their pivotal support and normally tends to hold said feed dogs beneath the work support.

The operationof my improved feeding mechanism will liefobvious from the above description. The work is laid upon the work support and drawn across the apex of the work supporting members 2 and 3, thus crimping the work for fthe entrance of the needle, so that said lneedle may enter and emerge from the .same surface of the work. The work is held upon the crimping ridge by the presser feet 9 and 10. As the shaft 28 .is oscillated, the disk 30 is brought into Contact with the lower ends of the feed dogs and 'is the said lower ends of the feed dogs are separated, the feeding surfaces of the feed dogs are forced out through the slots "in Vthe work supporting members 2 and 3, into engagement with the work or material rest,- mg thereon.

The shaft 25 is now oscillated through the'. arm 22 and its forked connection with the' block 21 reciprocates the feed dogs longitudinally of the work support, thus carrying the material to position the same for the next stitch. The feed dogs are now withdrawn by the spring 31 beneath the work supporting members 2 and 3, and the'reverse oscillation of the shaft 25 carries said feed dogs back to their initial position.

1t will be noted that the feed dogs as they move through the work supporting members are moving substantially ina direction at right angles to the said work supporting members, or if anything in a direction away from the apex of the crimping member, and therefore the work or material which is on the crimping member, is held in its stretched condition.

In the modified form of my intent-ion shown in Figs. 5 to 7 inclusive, the feed dogs 31 and 32 are provided with intermeshing gears 33, whereby all movements of either feed dog toward and from each other are so communicated to the other. The feed dog 31, is secured to its supporting rod by a Set screw 33, so that said feed dog and supporting rod will oscillate together. The feed dog 32 is similarly secured to its supporting rod. The block 34C, which engages the supporting rods of the feed dogs for the purpose of giving the feed dogs their longitudinal movement, is "loosely connected to each of said rods, So that said rods may be oscillated in said supporting block.

The supporting block 34 carries a projecting roller which engages the forked end of the arm 22 carried by the shaft 25. An arm is mounted upon the rod 20 and has an upwardly extending portion which is Secured to the rfeed dog 32 by a suitable pin 36. Said arm 35 at its lower' end carries a ball stud 37 which 4is connected by means of a link 38 to a ball stud 40 threaded into an arm 41 mounted on the outer end of the shaft 28.

As the shaft- 28 is oscillated, the arm 35 through the link 3S oscillates the feed dog 32, and through the int-ermeshing feed gear 36 oscillates the feed dog' 31. The feeding mechanism shown in my modified form of construction, operates practically in the same manner as the feeding mechanism above described, except that all the movements of the feed dogs are positive.

Having thus particularly described my invention, what I claim as new and desire to secure by Letters Patent, is

1. The combination with a work support having oppositely inclined work supporting surfaces forming a crimping ridge, presser members coperating therewith, of feeding mechanism including feed dogs, operating through each of said work sup orting surfaces, means for moving said eed dogs to feed the material and Ineans for giving each yof said feed dogs a fabric engaging Inovement in a direction at an angle to a central plane passing through said ridge, and in a direction substantially at right angles to the work supporting surface, through which said feed dogs operate.

i. 'l`he combination with a work support having oppositely inclined work supporting surfaces forming a crimping ridge, presser members cooperating therewith, of a feeding mechanism including feed dogs located beneath said inclined work supporting surfaces aml having work engaging movements in a direction at an angle toa central plane passing through said ridge and in a direction substantially at right angles to the sup porting surfaces through which said feel dogs operate, and means for simultanetmsly moving said feed dogs to fccdthe fabric.

Ii. 'l'he combination' with a work support having opposite!) inclined work supporting snrfzna'ns. fccd d i pivoted beneath said work support. means for swinging said feed dogs about their pivotal supports to give thereto a fabric engaging movement, means' for moving said feed dogs to fecd the fabric, said pivotal supports of said feed dogs being so disposed relative to the work supporting surfaces` that. said feed dogs will move substantially in a direction at right angles to the supporting surfaces through which said feed dogs operate and in a direction at right angles to the fccd of the. fabric.

Yi. rl`he combination with a work support having inclined work supporting surfaces of feeding mechanism including a feed dog pivoted beneath said work support, means for se. inging said feed dog about its pivotal center to give thereto a fabric engaging movement. means for moving said feed dogI to feed the fabric. said pivotal center of said fcod dog being so disposed relative to the work support that said feed dog moves in i direction substantially at right angles to the work supporting surface through which it passes. when brought into engagement with the fabric.

'l`lie combination with a work support, of a feeding mechanism inclmling pivotally suiiportcd feed dogs. members on which said fccd dogs ave pivotcd. means for oscillating` said feed dogs on said members in opposite directions and means for moving said memlicrsI loiufitudinally to give said feed dogs a work feeding movement.

o. 'lhe combination with a work support'` of a feeding mechanism including spaced rodsl sliding in bearings in said work support. a feed dog pivoted on each of said reds. means for swinging said feed dogs laterali).y away from each other to give thereto a fabric engaging movement and means for moving said rods longitudinally to fccd thc fabric.

7. 'l'hc combination with a work support. of a feeding mecaanism including pivolcd feed dogs, a shaft mounted in said work support having oscillation, devices between said shaft amil said feed dogs` fo'r moving,r the same to feed lthc fabric. and a second shaft located in sand work support for oscillation and devices uietwcen said second shaft and sahl feed dogs for giving thereto a fabric engaging mm'ement.

o'. The combination with a work support, of a feeding mechanism. including spaced rods mounted to slide in said work snp iort, a feed dog carried b v each of said rots. a shaft located in said work support land de` vices between said shaft and said spaced. rods for moving said rods longitudinally, a second shaft mounted in said work support, and devices between said shaft and said feed dogs for moving the same in opposite direC- tions.

5i. A sewing machine including in combination awork support havingr surfaces constituting a ridge forming member, each of said surfaces having openings therethrough for a feed dog. an over-hanging arm, a needle mounted on said overhanging arm and moving across said ridge forming member, and a feeding mechanism located beneath the said ridge forming humilier. said feeding mechanism includingr positively moving feed dogs operating respectively in said openings and movable in a direction substantially at right angles to said surfaces when engaging the fabric, and means for giving said feed dogs a fabric feeding movement.

10, .i sewing machine including in combination a work support, having a ridge forming member, an overhanging arm, a needle mounted on said overhanging arm, a feeding mechanism comprisingl supporting rods mounted in said work support, feed dogs carried by said supporting rods, means for moving sa id supporting rods longitudinally to give said feed dogs a fabric feeding movement and mea ns for swinging said feed dogs laterally away from each other upon said rods to bring the ysame into engagement with the fabric. l

11. sewingmiwlune including in conrbination a work Support. having a ridge forming member, an overhanging arm, a needle mounted on said overhanging arm. feeding mechanism comprising supporting rods mounted to slide. in said work support. a feed dog pivoted upon each of said supporting rods, means for moving said supporting rods to feed the fabric and means for moving said feed dogs simultaneously in opposite directions to engage the fabric.

12. A sewing machine including in eombination. a work support. an over-hanging arm` oppositely inclined work supporting members over which the fabric may be crimped. a needle carried by said overhang ing arm, and moving across the crimping incolla-rs. and a feeding mechanism comprising supinntii r rods located bcncath Suid Mnl; znngnuiing nziiinhcrfi, fcntl dogs; carried by .supporting rods, mcziir for movingr sain naal dogs to give said tubi-.ic :i feeding morcmcnt, and dcvices for moving .said fwd dogs in cppositc i'irectiir'us to cir gage thc fabric.

A sewing machine inclndii'ig in conibination, a wort( support. an ovcrlningrinrcr arm, oppositciy inclined work supporting lnenibcrs over which thc fabric may bc crimped, u nicdlt carried by said ovcrhang ing arm,l and moving across thc crin'ipingg membcrs, and a tccding n'icrlianiszn comprising supporting rods locutcd bcnrath said work supporting nic'nbcr;-. i'ccd dont@ carried by said supporting rods Minn Vfor movingisaid tccd dogs to gira. sant fabric a feeding Inoicnicnt. :i hatt n'wontctl insaiil work support for oscillation 7 a com disk carried by said .shaft :uni cnjfaringf said food ings i'or moring; thc @anni in ciuyositc directions to cngag thc ebric.

14. A feeding lncchanwna icl combinution www" tiny; i nu pivotcd upon earn Yl and Wardly extending incinlicz'. r ing said supporting rods and means for cnI iging thc di f extending portions ot sind foi-,d (logs tor swinging the same upon mit? rods.

15. A fouling: mcchanisin .including in combination, supporting rods, c, tccil dog pivoted upon each rod and having.; a. oownwardly extcrnling portion, nicnns for inoxYW ing Suid rods iongitudinally., :in oscillating Shaft, a cam disk carried tlicrcbgy and cngaging thc downwardly cxt'cniziingr pmticiiis of said fccd logs for nimi thc :sinne in opposite dircctions and a sprung i'or holding said feed dogs in contact n itn said can; disk.

16. A feeding nicclian including in combination a work suppor a, ccd ing bnrin spaccd perforated lugf" u :supporting ro ext/ending through said pcrioratcd lugs and mounted in bearings in Suid work sup port, n block mounted on aid rod and lo cated bctween said lugs, devices for engaging said block for n'ioving` said food dog laterally und means for swinging said food dog upon said rod.

17. A. feeding mechanism including in combination. a work support, :i 'feed dog having spaccd perforated ings, a supporting rod extending through said perforated lugs and mounted in bearings in said work support, a block mounted on said rod and located between said lugs, doriccsf for engaging said block for movingr said feed dog latcrally, ono ot said lugs having a down- Wardly cxtcnding portion .nrryini a rollcr, an oscillating shaft; haring a cam dish oporatinr against said roller to oscllatc thi food dog. und :i spring for homing 1f in Contact with ,sind con; di

lw, 'l`lxc combination oi' wiwi; inning inclincd worh supporting soria( Vforming a crimping' ridgc, fomit' :ind menne: for moving nach ot' s nicnibcw toward and iii-wn Ii :i direction substantiallj. 2li r'l Luid incliniwl work supp in a direction :at :in passing' through 1t). sowing in "liinc inrlimlinj; in wuz bination. :i 'wo-rl; ,-,\ipport, siitaii tox'nizn nicchanisni incluiii: ,n i scialle, :nl :i ticll inn' mechanism, said t ding nncianimi in- (inclini lft'ii ilo; s' iuiat'cil iicntatle .faul wznli iinpport. Intwine i4 ying :will fwd clogs siiniiltancou y Lagonnnt with thc fabric7 anni toward and troni nach othcr during cin-h riciprocalion of tho Novillo, and nnans for moving said fwd dogs to lia-d thc lnbric, said food dogg boing nioi'cd from nach otlnr while in cnlli l f anti iincrinittontiy into on tico. n compound fet-@ling device havingr iminlnrs located upon oppositc sitios of thc crimping ridge, Incnns for moving said Incniiipw: toward and troni C li othcr, Wlnrcby tbc fabric is dra on und 1in-an:`| for? moving said inc'nibcrs to cai w tho fab ric forward over thtJ crimping' ridge,

2l4 lnA a sowing machine. :i crimping` ridgo, a tending dcvicc` comprising tending members located upon opposite sidcs oi' thc crimpingy ridge, means for moving said funding members toward and from thc fabric, and away from cach other after engaging thc fabric, in ordcr'to stretch the fobric tuut over the crimping ridgc. und means for nim ingy tbc funding; members to fend tbc fabric.

A sowing; niacliinc including in combination. a "ivf'ul support., stitch-forming nncl'icnisni, a feeding mcclianism including an operating shaft, feed dogs both of which arc located at one side of the work support, and moans opcrntccl by said shaft for mow ing; :said ,ff-,cd di sinniitaneously :1nd intermittently into engagement with the fabric and toward :ind from nach other, and for morini! if: 'il feed dogs to fot il thc fabric, :fai-fl fwd dogs boing movcd l'romr cach other whilo in cngagcmcnt with the fabric for stretching the sainc.

Tn testimony whereof I zilliX my signature, in proscncc of two Witncsscs.

LANSING ONDERDONK.

il (l loo llt 

